[Bug 220193] PATCH 6.1 082/167 which adds support for Owon HDS200 breaks functionality of Owon VDS1022

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=220193

--- Comment #6 from leStoppe (lestoppe@gmail.com) ---
Apologies for the delayed response! I'll lookup the mail thread and reply there
as well.

1. I use this software : https://github.com/florentbr/Owon-VDS1022

   What you said is exactly what is happening. This software uses libusb to
access  the VDS1022. The breakage started when the kernel automatically started
to load the usb-simple-serial driver. The application could access it only
after I blacklisted the driver.

3. The VDS1022 supports some SCPI commands. I can enable the socket for it via
the userspace application above. I'm not sure the command set is same as HDS200
or if it can be done through the serial interface instead of libusb

2. Pasting the output of lsusb -v -d 5345:1234 below :

------------------------------------------------------------------------
Bus 001 Device 003: ID 5345:1234 Owon PDS6062T Oscilloscope
Negotiated speed: Full Speed (12Mbps)
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            2 Communications
  bDeviceSubClass         0 [unknown]
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x5345 Owon
  idProduct          0x1234 PDS6062T Oscilloscope
  bcdDevice           10.01
  iManufacturer           1 S
  iProduct                2 U
  iSerial                 3 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0029
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xc0
      Self Powered
    MaxPower               50mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         5 Physical Interface Device
      bInterfaceSubClass      6 [unknown]
      bInterfaceProtocol     80 
      iInterface              0 
      ** UNRECOGNIZED:  09 21 00 01 00 01 22 00 00
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
cannot read device status, Resource temporarily unavailable (11)
-----------------------------------------------------------------------

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